Air release valve



FIG. 1 is a front view of an air release valve showing my design;

FIG. 2 is a rear view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is an isometric side view thereof. 

CLAIM The ornamental design for the air release valve, as shown and described. 